CA2117943A1 - High-pressure, tubing-to-liner annulus seal for a well - Google Patents

High-pressure, tubing-to-liner annulus seal for a well

Info

Publication number
CA2117943A1
CA2117943A1 CA002117943A CA2117943A CA2117943A1 CA 2117943 A1 CA2117943 A1 CA 2117943A1 CA 002117943 A CA002117943 A CA 002117943A CA 2117943 A CA2117943 A CA 2117943A CA 2117943 A1 CA2117943 A1 CA 2117943A1
Authority
CA
Canada
Prior art keywords
seal
chevron
tubing
well
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002117943A
Other languages
French (fr)
Other versions
CA2117943C (en
Inventor
John Lindley Baugh
Anthony Charles Machala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of CA2117943A1 publication Critical patent/CA2117943A1/en
Application granted granted Critical
Publication of CA2117943C publication Critical patent/CA2117943C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • E21B33/1216—Anti-extrusion means, e.g. means to prevent cold flow of rubber packing
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/01—Sealings characterised by their shape

Abstract

A seal useful for high temperature and high-differential pressures, particularly in sour gas wells, is disclosed. The preferred embodiment of the seal is an elongated member having features akin to a chevron-type seal at at least one end, coupled with at least one interference seal. A pocket is created in between these two elements which can trap atmospheric pressure, thereby enhancing the ability of downhole well fluids to compress the seal against a mandrel for facilitating its installation in a liner bore. The additional structural rigidity provided by the variety of alternative designs presented overcomes the tendency of the chevron portion of the seal to fail to seat due to downhole fluid pressures, displacing the chevron portion out of shape prior to its insertion into a liner bore.
CA002117943A 1993-11-04 1994-10-12 High-pressure, tubing-to-liner annulus seal for a well Expired - Lifetime CA2117943C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14799293A 1993-11-04 1993-11-04
US08/147,992 1993-11-04

Publications (2)

Publication Number Publication Date
CA2117943A1 true CA2117943A1 (en) 1995-05-05
CA2117943C CA2117943C (en) 2005-03-15

Family

ID=22523777

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002117943A Expired - Lifetime CA2117943C (en) 1993-11-04 1994-10-12 High-pressure, tubing-to-liner annulus seal for a well

Country Status (2)

Country Link
CA (1) CA2117943C (en)
GB (1) GB2283518B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183644A (en) * 1967-01-03 1970-03-11 Rockwell Mfg Co Seal.

Also Published As

Publication number Publication date
GB2283518A (en) 1995-05-10
GB9420807D0 (en) 1994-11-30
CA2117943C (en) 2005-03-15
GB2283518B (en) 1998-01-14

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20141014